Metal wheel and method of making same



Ni. LACHMAN.

METAL WHEEL AND METHOD 0F MAKING SAME.

Patented Aug. il, 192i E-,AQAAQM I entre rs M'AURICE LACHMN. OF NEW YORK, N. YI., ASSIGNOR, BY tIESNE ASSIGNMENTS, T@

BETHLEHEM STEEL COMPANY, TION OF PENNSYLVANIA.

0F BETHLEHEM, FENNSYLVNIA, A -CORA- MTAL WHEEL AND METHOD 0F MAKING SAME.

Application iiled April 8,

To all whom it may concern.'

Be it known that I, MAURICE LAGHMAN, a citizen of .the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Metal Wheels and Methods of Making Same, of which the following is a specification.

My invention. relates to metal wheels of the type in which the rim and the spokes or body part are integral with one another and more particularly to wheels of this type wherein the rim consists of the7 head and the spokes or body consist of the web of a rolled metal bar of 'l' or form in cross-section.

In constructing wheels of this form it has been proposed to cut out portions of the web and then to bend or roll the rim into a circle to form the rim, the portions of web unremoved being by this operation brought into the proper rela-tion to form the spokes or body of the wheel, the inner ends of the spokes being assembled at the hub. In constructing a wheel in this manner the bending of the head into a circle is opposed by the heavy body of metal on edge which constitutes the spokes or equivalent part of the wheel so that there is a tendency to the formation of Hats and bulges in the head and difliculty is encountered in forming the head or rim into, a true circle especially if spokes of material width at therim are desired.

rl`he aim of my invention is to avoid these objections to which end my invention consists preferably 'in providing the rolled metal bar, from which the wheel is constructed, with a longitudinal groove or depression over the web and between the arms of the head whereby the head may be deformed or bent to a true circle or arc of a circle without bending or deforming the web or parts of web retained 'for the spok or body part of the wheel.

In the accompanying drawings:

F ig. 1 is a side elevation of a portion of a rolled metal T bar suitably prepared for use in carrying out my invention. a, y Fig. 2 is a cross-section of the same on the line 2 2 of Fig. 1.

Fig. 3 shows in side elevation the bar bent orrolled toform the rim) and body of the Specification of Letters Patent.

Patented Ang. il, 4922.

B920. Serial No. 372,134.

wheel, a portion only of the wheel being Shown.

Fig. 4 is a cross-section through the center of the wheel and taken cated by the line 4 4 Fig. 2.

Fig. 5 shows in cross-section an I bai similarly prepared for use in carrying out my invention.

- Fig. 6 is a side elevation ofthe same with its web divided into spoke parts.

Referring to Figs. 1 to 4, l indicates the head of a rolled metal bar of T shape in.

cross-section and of suitable length for forming a wheel or section of wheel of the desired diameter and 2 the web ofthe bar. In Fig. l the web is shown as divided or cut out to form spokes or spoke portions suitable for a wheel such as shown in Fig. 3.

The number of spokes, the extent of spaces between spokesor theentent to which in the finished wheel the space between rim and hub is filled out by metal formed from the web of the bar is a matter of choice and will obviously determine the manner of cutting out or slitting the web preparatory to the operation of forming o r bending the head to the circumference of the rim.

Between'v the arms or anges of the head or, as otherwise described over the web of the bar as prepared for bending, a depres sion or groove 4 is provided which may be made in the operation of rolling the bar or otherwise. The e'ect of this is that the two arms or Hanges constituting the head may be bent to the circle of the wheel rim without substantial opposition from or disturbance to the form of the body o the web and in a plane indi` etI as shown in the cross-section Fig. 4 wherein,

as will be seen, the said arms on H es appreach nearer to the bottom of the groove 4 at some places than at others and therefore the bending or deforming of the head langes into a true circular rim ma'y\ be accomplished without substantially deorming the body of the web. The dat places in the bottom of the groovd 4 due to the dicultyof bending the web on edge into an arc of a circle are indicated at 7. The depression or groove 4 obviously should be as narrow as possible consistently with the object to be attained so that there'will be little interruption in the surface of the rim f The usual tire or other rim indicated in dotted lines in Fig. 2 will however conceal any depression Adue tothe groove-4 in the l' finished wheel.

' the groove.

i' -the spokes ing a T beam having a gral spokes and as previously described. X' v that the hub ends of Obviously, the rolling er bending of thel head to the! circular manner to enlarge the l overcome the diiiiculty o the` rim due tothe mass of metal 'of'ithevweb on ed e. In this case the roove l1 instead of being formed-when'roll formed when or after blendingl or rolling the head into circular form to form the rim, the anges 1 lbeing expanded or offset to such extent that their lperiphery is of larger diameter than the diameter of any part of form may be ydone in a diameter and thus In rolling or cle of the rim or body part integral, consisting -in providdepression in its head over the web part,

a 2. The method wheel with rim and spokes integral, consist" T beam having a groove the latfplaces in` ingr the-bar vis bending the head to the cir-V the unremoved portions of the web are caused to converge intotbe s oke or4 body `element and assembled in containing any flats or As -infrom the forming operation. web may be divided to. bars each having intel York and Structinga metal'whee'l with rim andspoke' v December7 A.

dividing the web, v and forming the head into-circular vshape to form the rim P rt of constructing a metal ing in providingv a in its head in line vvwiththe web, dividing and bring the parts of the'web into proper relation for'the body or lspoke the web to. form spokesfand bending or rolle m0' the head into circular shape to form the l-rim and assemble the spokes at the hub.

l3. The method of constructing. a metal wheel from a. T- bar .havi integral head and web consisting'in divi ing the' web to form spokes, bending or rolling the head to form-acircular rim and bring the spokes into proper relation at ameter than thev diameter at the juncture of head and web. .f

4'. A metal wheel constructed .of an integral Tl beam, the head forming the circular rim member and the ,web divided t0 formgroove or depresl the spoke member anda sion in the rim i-n line with the web and bulges lresulting 5. A. metal wheel constructed of an inte- `theA hub and oset-v ting the head or rim flanges to a larger di# gral T beam the head of which isxbent to the v true circle of the rim while the spoke mem- `bers consist of subdivisions of the web and having a groove or depression in line with the web and between the arms of the' head orflats or bulges due to the bending'- operation MAURICE BACI-IMAN.

Witnesses: v

GEORGE BROWN, l F. 'B. TowNsEND.

. Signed at New York inthe county of New'. v

State of New York this 2d day'ofv i 

